Blue-green algae can reproduce quickly in still or slow-flowing water when there is abundant sunlight and sufficient nutrients.
Red Alert
- Lake Menindee Site 19
- Lake Menindee Outlet Regulator
- Silver City Highway
Amber Alert
- Murray River at Curlwaa
- Murray River at Fort Courage
- Murray River Lock 8
- Darling River at upstream Weir 32
- Darling River at Tolarno
- Darling River at Burtundy
- Darling River at Ellerslie
- Darling River at Tapio
Red Alert:
These alert levels represent ‘bloom’ conditions.
Water will appear green or discoloured and clumps or scums could be visible.
It can also give off a strong musty or organic odour.
Algae may be toxic to humans and animals.
Contact with or use of water from red alert areas should be avoided due to the risk of eye and skin irritation.
Drinking untreated or boiled water from these supplies can cause stomach upsets.
Alternative water supplies should be sought or activated carbon treatment employed to remove toxins.
People should not fish when an algal scum is present.
Owners should keep dogs away from high alert areas and provide alternative watering points for stock.
Amber Alert:
Blue-green algae may be multiplying, and the water may have a green tinge and musty or organic taste and odour.
The water should be considered as unsuitable for potable use and alternative supplies or prior treatment of raw water for domestic purposes should be considered.
The water may also be unsuitable for stock watering.
Generally suitable for water sports, however people are advised to exercise caution in these areas, as blue-green algal concentrations can rise to red alert levels quickly under warm, calm weather conditions.
Updates and information about blue-green algae blooms and red level warning areas can be obtained by visiting https://waterinsights.waternsw.com.au/ or calling 1800 999 457.
